Liquid level indicator



Oct.y 4, 1932. c. A. DE GlERs 1,881,264

LIQUID LEVEL INDICATQR 'Filed July 1o, 1929 2 sheets-sheet 1 46 lNvENToR ATTQRNEYS 0ct.-4, 1932. c. A. DE GlRs 1,881,264

I LIQUID LEVEL INDICATOR Filed July 10, 1929 2 Sheets-Sheet 2 ATTORNEY",`

Patented @et 4,. 1932 erger-Es PATENT errlcr.

CLARENCE A.. DE GIERS, F FOREST HILLS, NEW YORK, ASSIGNOR TO LIQUIDOMETER CORPORATION, OF LONG ISLAND' CITY, NEW YORK, A CORPORATION OF DELAWARE LIQUID LEVEL INDICATOR Application filed July 10,

The object of the present invention is to provide an improved design of` device suitable for attachment to tanks, for indlcatmg the level of liquid in the tank. rThe device herein described is especially suitable for severe service, such for instance as is encoun tered in connection with water tanks carried underneath Pullman cars.

rlhe device is arranged for attachment direct to the tank, is simple and substantiah and thoroughly protects the more delicate parts of the apparatus from abuse or injury, either from outside sources or from the tank contents. y

Further and other objects and advantages will be apparent from the specification and claim, and from the drawings which show byl way of illustration what is now considered the preferred embodiment of the invention.

Fig. 1 is a vertical cross-section of the device in position in a tank, with float in horizontal position. j

Fig. 2 is a. view of the device in Fig. 1, taken from beneath. V Fig. 3 is an enlarged view of the face of the device, taken from the right of Fig. 1.

Fig. 4 is an enlarged cross-section showing details of the operative mechanism of the device rith parts in the same position as in Fig. 1.

Fig. 5 is a view similar to Fig. 4 but with the parts in the positions assumed when the float is at the bottom of the tank.

Fig. 6 is an enlarged fragmentary view showing the pointer and its connection to the rod that actuates it..

Fig. .7 is a view on line 77 of Fig. 6.

In the drawings the tank is designated 10, and it is shown in Fig. 1 as being partly filled fast in arm 16 and rotate in bracket arms 22.

Projecting horizontally from trunnion 18 at i a point removed from the centerline thereof, is a-pin 24. It will be appreciated that this pinwill move like a crank pin about the axis with liquid 12, upon the surface of which' to arms 22 of the device. ',Pins 18 and 2O are 1929. Serial No. 377,086;

of pins 18 and 20, whenever those pins are rotated by the movement of the iioat. Bracketarms 22 are integral with body casting 26.

Pin 24 passes through a slot 28 in a yoke 30. Attached to the sides ofA the yoke and projecting horizontally therefrom are syl' phons 32 and 34, the other ends of the sylplions being connected to body 26 and to bracket 36 respectively, the bracket being bolted rigidly to body 26. The sylphons are sealed at their ends so as to be liquid tight, but they are interconnected by a` passage 38 through the yoke.

Projecting horizontally from the yokeis a rod 40, which ,passes through a guide sleeve 42 and has its free end in the hollow interior of body 26. f

With the above in mind it will be clear that as the float rises and falls with the change of level of liquid 12, yoke 30 will be moved horizontally by crank pin-24, and the free end of rod 40 will always assume'a certain definite position for every position of the float. ln order to visually indicate those positions the end of rod 40 is used to actuate an indicator, as follows.

The lower side of rod 40 is provided with a notch 44, which engages crank pin 46 of a crank shaft 48, best shown in Fig. 7. This shaft is mounted within body 26 by means of a fitting 50, in which fitting shaft 48 is supported for rotation on its journals 52.` n

AttachedA to crank pin 46, adjacent rod 40, is a wire 54 bearing on its outer end a pointer 456. lVhen rod'40 moves longitudinally under-the influence of the lloat, shaft'48 is ro- `t'ate'd on its journals 52, whereupon pointer 56 is moved with relation toa graduatedl chart 60, substantially arcuate shape, to in-A dicate on the chart the position of the float. or, as shown in Fig. 3, the amount of liquid in the tank. Figs. 1, 3 and4 show the positions of parts when the tank is half full,

while Fig. 5 shows their positions when the A tank is empty.

In front of the pointer and chart is a glass face 62, held in position by'threaded ring 64 screwed into body 26. Suitable packing between glass and body" serves to render liquid tight the interior of body 26. The sylphons are also sealed against leakage, and since they are connected through sleeve 42 with the interior of body 26 the result is that all the delicate parts of the apparatus are operating in a sealed chamber out of reach of the liquid in the tank or of outside liquids, gases, or other agencies liable to injure the parts. The arrangement also prevents change oit pressure in the tank :from interfering with the proper operation of the apparatus.

llt is customary to fill the sylphons and body with glycerine or other suitable liquid 66 to prevent condensation of moisture on the interior of glass 60.

rlo permit easy installation and removal of the device the tank is provided with a tubular inlet opening 68 welded into the wall of the tank as at 70 and flanged as at 72. rlhe Harige of body 26 is bolted to flange 72 with packing 74C between to prevent leakage of liquid 12. The opening through tube 68 is large enough to pass oat 14.

To avoid Contact of the float with the top or bottom of the tank the float is 'provided with a stop plate 76 which engages the tank as shown in 'the dotted 'iloat positions in Fig. l.

llt is to be understood that the invention is not limited to the specific embodiment herein illustrated and described but may be used in other ways without departure from its spirit as deined by the following claim.

l claimlln apparatus of the class described, in combination with a tank 'adapted to contain liql uid, a float adapted for movement by said liquid, a yoke, a sylphon adapted to support said yoke, means operatively interconnecting said Heat and said yoke whereby longitudinal movement of said yoke Occurs when the oat is moved by the liquid, a chart, a pointer adapted for movement relatively to said chart, and means interconnecting said yoke and said pointer whereby said pointer indicates on said chart the position of said ioat in the tank, said interconnecting means comprising a rod and a crank, said pointer being attached. to said crank and said rod operating io move said crank whereby said pointer is moved relatively to said chart,

ln testimony whereof I hereto aiix my signature.

CLARENCE A. Dr. (MERS.

manana 

